Preparing your equipment, you will need the following:-Seachem Acid and Alkaline Buffer-5 gallon bucket (40L approx) or mixing container-pH tester, preferably an electronic one if possible-water mixer, airstone or water pump

STEP 1: First, determine if you can use 100% tap water or not. If your KH is around 4 or less and GH is less than 10, you should be fine to use your tap water to mix/lower pH. Initial tap water pH is not as important because of the low KH. (Low KH = easy to adjust pH; High KH = hard to adjust pH)

If your tap water does not fit these requirements, you can mix R/O water and tap water to reach a mixture with a low KH.

Tap Water:pH = 8.0GH = 11KH = 15

2 gallons tap : 3 gallons R/OpH = 7.13KH = 4

So now that you have your tap:R/O mix ratio, you can add Acid Buffer to reach your desired pH, allowing time for pH to stabilize.